Critics' ratings
I've expected the ratings to be a lot better, nothing in the 90% area, but still better than where it's now. Shift in tone and humor are closer to what Marvel's been doing so far, there was no studio interference, lead seems like a person who's more public friendly than other DC leads (Affleck and Cavil), initial reviews were good too and there was no embargo like with BvS and JL.
MC ratings did go up a few points but still 55 isn't something to brag about, and the RT dropped all the way down to 63% and it's not that far from being rotten (top critics had it rotten from the get go).
Aquaman will (has) earned big money, perhaps it will be DC's first 1B movie, but still these are rather poor critics' ratings. Audience ratings are better but that's not the topic here, mostly because that can be easily skewed in any direction just like the IMDb rating.